Bitt-chock



Nov. 9, 1937. c. G. HALPINE BITT CHOCK Filed April 22. 1937 R O T N E V m CHARL E5 G. HALPINE W Y E N R Q T T A Y B Patented Nov. 9, 1937 i i PATENT OFFICE Y BITT-CHOCK Charles 1G. Halpine, United States Navy 1937, .seria vo."1 ss,410 p (o1. 114 1o1 (Granted under the" act of March 3, 1883, as

' f amended'April 30,

1 This invention relates to checks and has a paringor mooring line in proper position on the obappreciably upward and where, there is-a tendency.

for the tow line to become dislodged from the chock, dueto the yaw. or, pitch of the fioat.

Another object of the invention is the provision of a chock of the type described which will permit the tow line to be quickly and easily positioned therein but which will effectually prevent it from becoming displaced therefrom, irrespective of the angle of the tow line.

Another object of the invention is the provision of a chock of simple construction which may be cast as a unitary structure.

With these and other objects in view, as well as other advantages that may be incident to the use of the improvements, the invention consists in the parts and combinations thereof hereinafter set forth and claimed, and with the understanding that the several necessary elements constituting the same may be varied in proportion and arrangement without departing from the nature and scope of the invention, as defined in the appended claims.

In order to make the invention more clearly understood, there are shown in the accompanying drawing, means for carrying the invention into practical use, without limiting the improvements in their useful application to the particular construction, which, for the purpose of explanation, have been made the subject of illustration.

In the accompanying drawing:

Fig. 1 is a perspective view of the improved chock;

Fig. 2 is a plan view, on a smaller scale, of the chock and associated securing bitts, showing the tow line in different transverse positions; and

Fig. 3 is a similar view illustrating the manner in which the invention may be employed as a combined chock and bitt.

Referring to the drawing, the improved chock is shown as comprising a base plate I0 adapted to be secured to the upper surface of a seaplane float or to the deck of a vessel by fastening means II passing through openings l2 formed in the base plate. Two vertically extending posts l3 and M are carried by the base plate It], preferably being cast integrally therewith, and are arranged approximately ina fore and aft spaced relation and slightly, butnot necessarily, offset laterally with respect to one another. These posts l3 and [4 are formed with laterally extending horns or fingers l5 andlfi for preventing accidental displacement of the line in a vertical direction. The forward post i3 is also formed with an arm or extension I1 which, projects laterally and then rearwardly toward the post l4 and terminates with adownwardly extending hook i8.

j In practice, a tow line IBisinitially positioned within the chock by passing it beneath arm I1 and hook l8 and then over the top of the'post I4. The running end of the line I9 may be made fast on a pair of bitts 20 located aft of the chock, or in any other suitable manner.

It will be noted from an inspection of Figs. 2 and 3, that with the described construction, the tow line may assume a plurality of different lateral positions without becoming disengaged from the chock, the post l3 and hook l8 limiting the swinging movement of the tow line in opposite directions. In View of the fact that the tow 7 line nearly always extends upwardly at an angle to the surface of the water and is under tension, the hook l8 will prevent the line from escaping from beneath the extension I1.

In Fig. 3 there is illustrated another method of securing the tow line to the chock. In this case, the tow line passes aft beneath the extension 11, around the post M, and thence forwardly around the post l3 and again beneath the extension in the conventional figure 8 manner. This method of securing the line dispenses with the bitts 20, the posts l3 and I4 themselves functioning as bitts.

It will be understood that the terms fore and af have been employed for convenience of explanation, as the chock may be mounted on the stern where its position will be reversed. Also, it is not necessary to provide the posts I3 and [4 on a common base, as these elements may be separately mounted. 7

Other modifications and changes in the proportions and arrangement of the parts of this device or other adaptations of its use may be made by those skilled in the art without departing from the nature and scope of the invention, as defined in the appended claims.

The invention described herein may be manufactured and used by or for the Government of the United States of America for governmental purposes without the payment of any royalties thereon or therefor.

I claim:

1. A chock comprising a post; and a second post arranged in spaced relation to said first mentioned post, said first mentioned post being 'provided with an arm projecting laterally to a point ofiset 'with respect to said second post and thence longitudinally to a point in substantially lateral alignment with and in spaced relation to said second post for preventing a line disposed-abetween said posts from becoming displaced there:- from by strains exerted along saidline.

2. A chock comprising a post; and a second."

post arranged in spaced relation to said first men.- tioned post, said first mentioned post beingfprovided with an arm projecting laterally to 'a point' offset with respect to said secondlpost and thence,

longitudinally to a point in substantially'lateraI alignment with and in spaced relation tdisaid second post and terminating in a downwardlyex: tending hook for preventing aline disposed between said posts from becoming displaced'theref frorn- Icy-strains exerted along said line: A V

3; Achock comprising a post; and-a second post arranged iii-spaced relation to said first mentionedpost, said first mentioned post being provided with extending'in opposite directions,

one'of said arms-projecting laterally to a pointofiset with respect to said second post and thence longitudinally to a point in: substantially lateral ali'gnmei'rtwith and in spaced relationto said 30? second post and terminating in a downwardlyextending hook for preventing 'a' line disposed between said posts from becoming displaced therefrom by strains exerted along said line.

4. A chock comprising a post; and a second post arranged in spaced relation to said first mentioned post, said first mentioned post being provided with an arm projecting laterally to a. point ofiset with respecttto said second post and thence longitudinally to a point in substantially lateral alignment with and inspaoedrelatibn to said second post, the axis of said second post lying .fwithout a vertical plane containing the vertical axis of said first mentioned post and disposed normal to the axis of direction of the laterally projecting portion of saidarm, said arm preventing a line disposed between said posts from becoming" displaced therefrom by strains exerted along said line.

5. A chock comprising a post; and a second post arranged in spaced relation to said first men- 

